diff options
Diffstat (limited to 'epan/dissectors/packet-idmp.c')
| -rw-r--r-- | epan/dissectors/packet-idmp.c | 953 |
1 files changed, 953 insertions, 0 deletions
diff --git a/epan/dissectors/packet-idmp.c b/epan/dissectors/packet-idmp.c new file mode 100644 index 00000000..30b25c17 --- /dev/null +++ b/epan/dissectors/packet-idmp.c @@ -0,0 +1,953 @@ +/* Do not modify this file. Changes will be overwritten. */ +/* Generated automatically by the ASN.1 to Wireshark dissector compiler */ +/* packet-idmp.c */ +/* asn2wrs.py -b -L -p idmp -c ./idmp.cnf -s ./packet-idmp-template -D . -O ../.. IDMProtocolSpecification.asn CommonProtocolSpecification.asn */ + +/* packet-idmp.c + * Routines for X.519 Internet Directly Mapped Procotol (IDMP) packet dissection + * Graeme Lunt 2010 + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> +#include <epan/prefs.h> +#include <epan/reassemble.h> +#include <epan/conversation.h> +#include <epan/oids.h> +#include <epan/asn1.h> +#include <epan/ipproto.h> +#include <epan/strutil.h> + +#include <wsutil/str_util.h> + +#include "packet-tcp.h" + +#include "packet-ber.h" +#include "packet-ros.h" +#include "packet-x509ce.h" + + +#define PNAME "X.519 Internet Directly Mapped Protocol" +#define PSNAME "IDMP" +#define PFNAME "idmp" + +void proto_register_idmp(void); +void proto_reg_handoff_idm(void); +void register_idmp_protocol_info(const char *oid, const ros_info_t *rinfo, int proto _U_, const char *name); + +static gboolean idmp_desegment = TRUE; +#define IDMP_TCP_PORT 1102 /* made up for now - not IANA registered */ +static gboolean idmp_reassemble = TRUE; +static dissector_handle_t idmp_handle = NULL; + +static proto_tree *top_tree = NULL; +static const char *protocolID = NULL; +static const char *saved_protocolID = NULL; +static guint32 opcode = -1; + +/* Initialize the protocol and registered fields */ +int proto_idmp = -1; + +static int hf_idmp_version = -1; +static int hf_idmp_final = -1; +static int hf_idmp_length = -1; +static int hf_idmp_PDU = -1; + +static reassembly_table idmp_reassembly_table; + +static int hf_idmp_fragments = -1; +static int hf_idmp_fragment = -1; +static int hf_idmp_fragment_overlap = -1; +static int hf_idmp_fragment_overlap_conflicts = -1; +static int hf_idmp_fragment_multiple_tails = -1; +static int hf_idmp_fragment_too_long_fragment = -1; +static int hf_idmp_fragment_error = -1; +static int hf_idmp_fragment_count = -1; +static int hf_idmp_reassembled_in = -1; +static int hf_idmp_reassembled_length = -1; +static int hf_idmp_segment_data = -1; + +static gint ett_idmp_fragment = -1; +static gint ett_idmp_fragments = -1; + +static const fragment_items idmp_frag_items = { + /* Fragment subtrees */ + &ett_idmp_fragment, + &ett_idmp_fragments, + /* Fragment fields */ + &hf_idmp_fragments, + &hf_idmp_fragment, + &hf_idmp_fragment_overlap, + &hf_idmp_fragment_overlap_conflicts, + &hf_idmp_fragment_multiple_tails, + &hf_idmp_fragment_too_long_fragment, + &hf_idmp_fragment_error, + &hf_idmp_fragment_count, + /* Reassembled in field */ + &hf_idmp_reassembled_in, + /* Reassembled length field */ + &hf_idmp_reassembled_length, + /* Reassembled data field */ + NULL, + /* Tag */ + "IDMP fragments" +}; + + +static int call_idmp_oid_callback(tvbuff_t *tvb, int offset, packet_info *pinfo, int op, proto_tree *tree, struct SESSION_DATA_STRUCTURE *session) +{ + if(session != NULL) { + + /* XXX saved_protocolID should be part of session data */ + if (!saved_protocolID) { + saved_protocolID = "[ unknown ]"; + } + + /* mimic ROS! */ + session->ros_op = op; + offset = call_ros_oid_callback(saved_protocolID, tvb, offset, pinfo, tree, session); + } + + return offset; + +} + +static int hf_idmp_bind = -1; /* IdmBind */ +static int hf_idmp_bindResult = -1; /* IdmBindResult */ +static int hf_idmp_bindError = -1; /* IdmBindError */ +static int hf_idmp_request = -1; /* Request */ +static int hf_idmp_idm_result = -1; /* IdmResult */ +static int hf_idmp_idm_error = -1; /* Error */ +static int hf_idmp_reject = -1; /* IdmReject */ +static int hf_idmp_unbind = -1; /* Unbind */ +static int hf_idmp_abort = -1; /* Abort */ +static int hf_idmp_startTLS = -1; /* StartTLS */ +static int hf_idmp_tLSResponse = -1; /* TLSResponse */ +static int hf_idmp_protocolID = -1; /* OBJECT_IDENTIFIER */ +static int hf_idmp_callingAETitle = -1; /* GeneralName */ +static int hf_idmp_calledAETitle = -1; /* GeneralName */ +static int hf_idmp_bind_argument = -1; /* Bind_argument */ +static int hf_idmp_respondingAETitle = -1; /* GeneralName */ +static int hf_idmp_bind_result = -1; /* Bind_result */ +static int hf_idmp_bind_errcode = -1; /* Bind_errcode */ +static int hf_idmp_aETitleError = -1; /* T_aETitleError */ +static int hf_idmp_bind_error = -1; /* Bind_error */ +static int hf_idmp_invokeID = -1; /* INTEGER */ +static int hf_idmp_opcode = -1; /* Code */ +static int hf_idmp_argument = -1; /* T_argument */ +static int hf_idmp_idm_invokeID = -1; /* InvokeId */ +static int hf_idmp_result = -1; /* T_result */ +static int hf_idmp_errcode = -1; /* T_errcode */ +static int hf_idmp_error = -1; /* T_error */ +static int hf_idmp_reason = -1; /* T_reason */ +static int hf_idmp_local = -1; /* T_local */ +static int hf_idmp_global = -1; /* OBJECT_IDENTIFIER */ +static int hf_idmp_present = -1; /* INTEGER */ +static int hf_idmp_absent = -1; /* NULL */ + +/* Initialize the subtree pointers */ +static gint ett_idmp = -1; +static gint ett_idmp_IDM_PDU = -1; +static gint ett_idmp_IdmBind = -1; +static gint ett_idmp_IdmBindResult = -1; +static gint ett_idmp_IdmBindError = -1; +static gint ett_idmp_Request = -1; +static gint ett_idmp_IdmResult = -1; +static gint ett_idmp_Error = -1; +static gint ett_idmp_IdmReject = -1; +static gint ett_idmp_Code = -1; +static gint ett_idmp_InvokeId = -1; + + + +static int +dissect_idmp_OBJECT_IDENTIFIER(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_object_identifier_str(implicit_tag, actx, tree, tvb, offset, hf_index, &protocolID); + + return offset; +} + + + +static int +dissect_idmp_Bind_argument(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data; + + return call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_BIND | ROS_OP_ARGUMENT), top_tree, session); + + + return offset; +} + + +static const ber_sequence_t IdmBind_sequence[] = { + { &hf_idmp_protocolID , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_idmp_OBJECT_IDENTIFIER }, + { &hf_idmp_callingAETitle , BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL, dissect_x509ce_GeneralName }, + { &hf_idmp_calledAETitle , BER_CLASS_CON, 1, BER_FLAGS_OPTIONAL, dissect_x509ce_GeneralName }, + { &hf_idmp_bind_argument , BER_CLASS_CON, 2, 0, dissect_idmp_Bind_argument }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_IdmBind(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + protocolID = saved_protocolID = NULL; + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + IdmBind_sequence, hf_index, ett_idmp_IdmBind); + + if (protocolID) { + saved_protocolID = wmem_strdup(wmem_epan_scope(), protocolID); + } + return offset; +} + + + +static int +dissect_idmp_Bind_result(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data; + + return call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_BIND | ROS_OP_RESULT), top_tree, session); + + + return offset; +} + + +static const ber_sequence_t IdmBindResult_sequence[] = { + { &hf_idmp_protocolID , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_idmp_OBJECT_IDENTIFIER }, + { &hf_idmp_respondingAETitle, BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL, dissect_x509ce_GeneralName }, + { &hf_idmp_bind_result , BER_CLASS_CON, 1, 0, dissect_idmp_Bind_result }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_IdmBindResult(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + IdmBindResult_sequence, hf_index, ett_idmp_IdmBindResult); + + return offset; +} + + + +static int +dissect_idmp_Bind_errcode(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + + + return offset; +} + + +static const value_string idmp_T_aETitleError_vals[] = { + { 0, "callingAETitleNotAccepted" }, + { 1, "calledAETitleNotRecognized" }, + { 0, NULL } +}; + + +static int +dissect_idmp_T_aETitleError(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + + +static int +dissect_idmp_Bind_error(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data; + + return call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_BIND| ROS_OP_ERROR), top_tree, session); + + + return offset; +} + + +static const ber_sequence_t IdmBindError_sequence[] = { + { &hf_idmp_protocolID , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_idmp_OBJECT_IDENTIFIER }, + { &hf_idmp_bind_errcode , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_Bind_errcode }, + { &hf_idmp_respondingAETitle, BER_CLASS_CON, 0, BER_FLAGS_OPTIONAL, dissect_x509ce_GeneralName }, + { &hf_idmp_aETitleError , BER_CLASS_UNI, BER_UNI_TAG_ENUMERATED, BER_FLAGS_OPTIONAL|BER_FLAGS_NOOWNTAG, dissect_idmp_T_aETitleError }, + { &hf_idmp_bind_error , BER_CLASS_CON, 1, 0, dissect_idmp_Bind_error }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_IdmBindError(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + IdmBindError_sequence, hf_index, ett_idmp_IdmBindError); + + return offset; +} + + + +static int +dissect_idmp_INTEGER(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + + +static int +dissect_idmp_T_local(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + &opcode); + + return offset; +} + + +static const value_string idmp_Code_vals[] = { + { 0, "local" }, + { 1, "global" }, + { 0, NULL } +}; + +static const ber_choice_t Code_choice[] = { + { 0, &hf_idmp_local , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_T_local }, + { 1, &hf_idmp_global , BER_CLASS_UNI, BER_UNI_TAG_OID, BER_FLAGS_NOOWNTAG, dissect_idmp_OBJECT_IDENTIFIER }, + { 0, NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_Code(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_choice(actx, tree, tvb, offset, + Code_choice, hf_index, ett_idmp_Code, + NULL); + + return offset; +} + + + +static int +dissect_idmp_T_argument(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data; + + return call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_INVOKE | ROS_OP_ARGUMENT | opcode), top_tree, session); + + + return offset; +} + + +static const ber_sequence_t Request_sequence[] = { + { &hf_idmp_invokeID , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_INTEGER }, + { &hf_idmp_opcode , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_idmp_Code }, + { &hf_idmp_argument , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_T_argument }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_Request(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + Request_sequence, hf_index, ett_idmp_Request); + + return offset; +} + + + +static int +dissect_idmp_NULL(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index); + + return offset; +} + + +static const value_string idmp_InvokeId_vals[] = { + { 0, "present" }, + { 1, "absent" }, + { 0, NULL } +}; + +static const ber_choice_t InvokeId_choice[] = { + { 0, &hf_idmp_present , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_INTEGER }, + { 1, &hf_idmp_absent , BER_CLASS_UNI, BER_UNI_TAG_NULL, BER_FLAGS_NOOWNTAG, dissect_idmp_NULL }, + { 0, NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_InvokeId(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_choice(actx, tree, tvb, offset, + InvokeId_choice, hf_index, ett_idmp_InvokeId, + NULL); + + return offset; +} + + + +static int +dissect_idmp_T_result(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + struct SESSION_DATA_STRUCTURE *session = (struct SESSION_DATA_STRUCTURE*)actx->private_data; + + return call_idmp_oid_callback(tvb, offset, actx->pinfo, (ROS_OP_INVOKE | ROS_OP_RESULT | opcode), top_tree, session); + + + return offset; +} + + +static const ber_sequence_t IdmResult_sequence[] = { + { &hf_idmp_idm_invokeID , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_idmp_InvokeId }, + { &hf_idmp_opcode , BER_CLASS_ANY/*choice*/, -1/*choice*/, BER_FLAGS_NOOWNTAG|BER_FLAGS_NOTCHKTAG, dissect_idmp_Code }, + { &hf_idmp_result , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_T_result }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_IdmResult(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + IdmResult_sequence, hf_index, ett_idmp_IdmResult); + + return offset; +} + + + +static int +dissect_idmp_T_errcode(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + + + return offset; +} + + + +static int +dissect_idmp_T_error(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + + + return offset; +} + + +static const ber_sequence_t Error_sequence[] = { + { &hf_idmp_invokeID , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_INTEGER }, + { &hf_idmp_errcode , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_T_errcode }, + { &hf_idmp_error , BER_CLASS_ANY, 0, BER_FLAGS_NOOWNTAG, dissect_idmp_T_error }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_Error(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + Error_sequence, hf_index, ett_idmp_Error); + + return offset; +} + + +static const value_string idmp_T_reason_vals[] = { + { 0, "mistypedPDU" }, + { 1, "duplicateInvokeIDRequest" }, + { 2, "unsupportedOperationRequest" }, + { 3, "unknownOperationRequest" }, + { 4, "mistypedArgumentRequest" }, + { 5, "resourceLimitationRequest" }, + { 6, "unknownInvokeIDResult" }, + { 7, "mistypedResultRequest" }, + { 8, "unknownInvokeIDError" }, + { 9, "unknownError" }, + { 10, "mistypedParameterError" }, + { 0, NULL } +}; + + +static int +dissect_idmp_T_reason(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + +static const ber_sequence_t IdmReject_sequence[] = { + { &hf_idmp_invokeID , BER_CLASS_UNI, BER_UNI_TAG_INTEGER, BER_FLAGS_NOOWNTAG, dissect_idmp_INTEGER }, + { &hf_idmp_reason , BER_CLASS_UNI, BER_UNI_TAG_ENUMERATED, BER_FLAGS_NOOWNTAG, dissect_idmp_T_reason }, + { NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_IdmReject(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_sequence(implicit_tag, actx, tree, tvb, offset, + IdmReject_sequence, hf_index, ett_idmp_IdmReject); + + return offset; +} + + + +static int +dissect_idmp_Unbind(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index); + + return offset; +} + + +static const value_string idmp_Abort_vals[] = { + { 0, "mistypedPDU" }, + { 1, "unboundRequest" }, + { 2, "invalidPDU" }, + { 3, "resourceLimitation" }, + { 4, "connectionFailed" }, + { 5, "invalidProtocol" }, + { 6, "reasonNotSpecified" }, + { 0, NULL } +}; + + +static int +dissect_idmp_Abort(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + + +static int +dissect_idmp_StartTLS(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_null(implicit_tag, actx, tree, tvb, offset, hf_index); + + return offset; +} + + +static const value_string idmp_TLSResponse_vals[] = { + { 0, "success" }, + { 1, "operationsError" }, + { 2, "protocolError" }, + { 3, "unavailable" }, + { 0, NULL } +}; + + +static int +dissect_idmp_TLSResponse(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_integer(implicit_tag, actx, tree, tvb, offset, hf_index, + NULL); + + return offset; +} + + +static const value_string idmp_IDM_PDU_vals[] = { + { 0, "bind" }, + { 1, "bindResult" }, + { 2, "bindError" }, + { 3, "request" }, + { 4, "result" }, + { 5, "error" }, + { 6, "reject" }, + { 7, "unbind" }, + { 8, "abort" }, + { 9, "startTLS" }, + { 10, "tLSResponse" }, + { 0, NULL } +}; + +static const ber_choice_t IDM_PDU_choice[] = { + { 0, &hf_idmp_bind , BER_CLASS_CON, 0, 0, dissect_idmp_IdmBind }, + { 1, &hf_idmp_bindResult , BER_CLASS_CON, 1, 0, dissect_idmp_IdmBindResult }, + { 2, &hf_idmp_bindError , BER_CLASS_CON, 2, 0, dissect_idmp_IdmBindError }, + { 3, &hf_idmp_request , BER_CLASS_CON, 3, 0, dissect_idmp_Request }, + { 4, &hf_idmp_idm_result , BER_CLASS_CON, 4, 0, dissect_idmp_IdmResult }, + { 5, &hf_idmp_idm_error , BER_CLASS_CON, 5, 0, dissect_idmp_Error }, + { 6, &hf_idmp_reject , BER_CLASS_CON, 6, 0, dissect_idmp_IdmReject }, + { 7, &hf_idmp_unbind , BER_CLASS_CON, 7, 0, dissect_idmp_Unbind }, + { 8, &hf_idmp_abort , BER_CLASS_CON, 8, 0, dissect_idmp_Abort }, + { 9, &hf_idmp_startTLS , BER_CLASS_CON, 9, 0, dissect_idmp_StartTLS }, + { 10, &hf_idmp_tLSResponse , BER_CLASS_CON, 10, 0, dissect_idmp_TLSResponse }, + { 0, NULL, 0, 0, 0, NULL } +}; + +static int +dissect_idmp_IDM_PDU(bool implicit_tag _U_, tvbuff_t *tvb _U_, int offset _U_, asn1_ctx_t *actx _U_, proto_tree *tree _U_, int hf_index _U_) { + offset = dissect_ber_choice(actx, tree, tvb, offset, + IDM_PDU_choice, hf_index, ett_idmp_IDM_PDU, + NULL); + + return offset; +} + + +void +register_idmp_protocol_info(const char *oid, const ros_info_t *rinfo, int proto _U_, const char *name) +{ + /* just register with ROS for now */ + register_ros_protocol_info(oid, rinfo, proto, name, FALSE); +} + + +static int dissect_idmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_) +{ + int offset = 0; + + proto_item *item; + proto_tree *tree; + asn1_ctx_t asn1_ctx; + struct SESSION_DATA_STRUCTURE session; + gboolean idmp_final; + guint32 idmp_length; + fragment_head *fd_head; + conversation_t *conv; + guint32 dst_ref = 0; + + asn1_ctx_init(&asn1_ctx, ASN1_ENC_BER, TRUE, pinfo); + + conv = find_conversation_pinfo(pinfo, 0); + if (conv) { + /* Found a conversation, also use index for the generated dst_ref */ + dst_ref = conv->conv_index; + } + + /* save parent_tree so subdissectors can create new top nodes */ + top_tree=parent_tree; + + item = proto_tree_add_item(parent_tree, proto_idmp, tvb, 0, -1, ENC_NA); + tree = proto_item_add_subtree(item, ett_idmp); + + col_set_str(pinfo->cinfo, COL_PROTOCOL, "IDMP"); + + /* now check the segment fields */ + + proto_tree_add_item(tree, hf_idmp_version, tvb, offset, 1, ENC_BIG_ENDIAN); offset++; + proto_tree_add_item(tree, hf_idmp_final, tvb, offset, 1, ENC_BIG_ENDIAN); + idmp_final = tvb_get_guint8(tvb, offset); offset++; + proto_tree_add_item(tree, hf_idmp_length, tvb, offset, 4, ENC_BIG_ENDIAN); + idmp_length = tvb_get_ntohl(tvb, offset); offset += 4; + + asn1_ctx.private_data = &session; + + if(idmp_reassemble) { + + pinfo->fragmented = !idmp_final; + + col_append_fstr(pinfo->cinfo, COL_INFO, " [%sIDMP fragment, %u byte%s]", + idmp_final ? "Final " : "" , + idmp_length, plurality(idmp_length, "", "s")); + + fd_head = fragment_add_seq_next(&idmp_reassembly_table, tvb, offset, + pinfo, dst_ref, NULL, + idmp_length, !idmp_final); + + if(fd_head && fd_head->next) { + proto_tree_add_item(tree, hf_idmp_segment_data, tvb, offset, (idmp_length) ? -1 : 0, ENC_NA); + + if (idmp_final) { + /* This is the last segment */ + tvb = process_reassembled_data (tvb, offset, pinfo, + "Reassembled IDMP", fd_head, &idmp_frag_items, NULL, tree); + offset = 0; + } else if (pinfo->num != fd_head->reassembled_in) { + /* Add a "Reassembled in" link if not reassembled in this frame */ + proto_tree_add_uint (tree, hf_idmp_reassembled_in, + tvb, 0, 0, fd_head->reassembled_in); + } + } + + } else { + if(!idmp_final) { + + col_append_fstr(pinfo->cinfo, COL_INFO, " [IDMP fragment, %u byte%s, IDMP reassembly not enabled]", + idmp_length, plurality(idmp_length, "", "s")); + + proto_tree_add_bytes_format_value(tree, hf_idmp_segment_data, tvb, offset, (idmp_length) ? -1 : 0, + NULL, "(IDMP reassembly not enabled)"); + } + } + /* not reassembling - just dissect */ + if(idmp_final) { + asn1_ctx.private_data = &session; + dissect_idmp_IDM_PDU(FALSE, tvb, offset, &asn1_ctx, tree, hf_idmp_PDU); + } + + return tvb_captured_length(tvb); +} + +static guint get_idmp_pdu_len(packet_info *pinfo _U_, tvbuff_t *tvb, + int offset, void *data _U_) +{ + guint32 len; + + len = tvb_get_ntohl(tvb, offset + 2); + + return len + 6; +} + +static int dissect_idmp_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data) +{ + tcp_dissect_pdus(tvb, pinfo, parent_tree, idmp_desegment, 0, get_idmp_pdu_len, dissect_idmp, data); + return tvb_captured_length(tvb); +} + +static void idmp_reassemble_cleanup(void) +{ + protocolID = NULL; // packet scoped + saved_protocolID = NULL; // epan scoped copy of protocolID + opcode = -1; +} + +/*--- proto_register_idmp -------------------------------------------*/ +void proto_register_idmp(void) +{ + /* List of fields */ + static hf_register_info hf[] = { + { &hf_idmp_version, + { "version", "idmp.version", + FT_INT8, BASE_DEC, NULL, 0, + "idmp.INTEGER", HFILL }}, + { &hf_idmp_final, + { "final", "idmp.final", + FT_BOOLEAN, BASE_NONE, NULL, 0, + "idmp.BOOLEAN", HFILL }}, + { &hf_idmp_length, + { "length", "idmp.length", + FT_INT32, BASE_DEC, NULL, 0, + "idmp.INTEGER", HFILL }}, + { &hf_idmp_PDU, + { "IDM-PDU", "idmp.pdu", + FT_UINT32, BASE_DEC, VALS(idmp_IDM_PDU_vals), 0, + "idmp.PDU", HFILL }}, + /* Fragment entries */ + { &hf_idmp_fragments, + { "IDMP fragments", "idmp.fragments", FT_NONE, BASE_NONE, + NULL, 0x00, NULL, HFILL } }, + { &hf_idmp_fragment, + { "IDMP fragment", "idmp.fragment", FT_FRAMENUM, BASE_NONE, + NULL, 0x00, NULL, HFILL } }, + { &hf_idmp_fragment_overlap, + { "IDMP fragment overlap", "idmp.fragment.overlap", FT_BOOLEAN, + BASE_NONE, NULL, 0x00, NULL, HFILL } }, + { &hf_idmp_fragment_overlap_conflicts, + { "IDMP fragment overlapping with conflicting data", + "idmp.fragment.overlap.conflicts", FT_BOOLEAN, BASE_NONE, + NULL, 0x00, NULL, HFILL } }, + { &hf_idmp_fragment_multiple_tails, + { "IDMP has multiple tail fragments", + "idmp.fragment.multiple_tails", FT_BOOLEAN, BASE_NONE, + NULL, 0x00, NULL, HFILL } }, + { &hf_idmp_fragment_too_long_fragment, + { "IDMP fragment too long", "idmp.fragment.too_long_fragment", + FT_BOOLEAN, BASE_NONE, NULL, 0x00, NULL, HFILL } }, + { &hf_idmp_fragment_error, + { "IDMP defragmentation error", "idmp.fragment.error", FT_FRAMENUM, + BASE_NONE, NULL, 0x00, NULL, HFILL } }, + { &hf_idmp_fragment_count, + { "IDMP fragment count", "idmp.fragment.count", FT_UINT32, BASE_DEC, + NULL, 0x00, NULL, HFILL } }, + { &hf_idmp_reassembled_in, + { "Reassembled IDMP in frame", "idmp.reassembled.in", FT_FRAMENUM, BASE_NONE, + NULL, 0x00, "This IDMP packet is reassembled in this frame", HFILL } }, + { &hf_idmp_reassembled_length, + { "Reassembled IDMP length", "idmp.reassembled.length", FT_UINT32, BASE_DEC, + NULL, 0x00, "The total length of the reassembled payload", HFILL } }, + { &hf_idmp_segment_data, + { "IDMP segment data", "idmp.segment_data", FT_BYTES, BASE_NONE, + NULL, 0x00, NULL, HFILL } }, + + { &hf_idmp_bind, + { "bind", "idmp.bind_element", + FT_NONE, BASE_NONE, NULL, 0, + "IdmBind", HFILL }}, + { &hf_idmp_bindResult, + { "bindResult", "idmp.bindResult_element", + FT_NONE, BASE_NONE, NULL, 0, + "IdmBindResult", HFILL }}, + { &hf_idmp_bindError, + { "bindError", "idmp.bindError_element", + FT_NONE, BASE_NONE, NULL, 0, + "IdmBindError", HFILL }}, + { &hf_idmp_request, + { "request", "idmp.request_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_idm_result, + { "result", "idmp.result_element", + FT_NONE, BASE_NONE, NULL, 0, + "IdmResult", HFILL }}, + { &hf_idmp_idm_error, + { "error", "idmp.error_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_reject, + { "reject", "idmp.reject_element", + FT_NONE, BASE_NONE, NULL, 0, + "IdmReject", HFILL }}, + { &hf_idmp_unbind, + { "unbind", "idmp.unbind_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_abort, + { "abort", "idmp.abort", + FT_UINT32, BASE_DEC, VALS(idmp_Abort_vals), 0, + NULL, HFILL }}, + { &hf_idmp_startTLS, + { "startTLS", "idmp.startTLS_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_tLSResponse, + { "tLSResponse", "idmp.tLSResponse", + FT_UINT32, BASE_DEC, VALS(idmp_TLSResponse_vals), 0, + NULL, HFILL }}, + { &hf_idmp_protocolID, + { "protocolID", "idmp.protocolID", + FT_OID, BASE_NONE, NULL, 0, + "OBJECT_IDENTIFIER", HFILL }}, + { &hf_idmp_callingAETitle, + { "callingAETitle", "idmp.callingAETitle", + FT_UINT32, BASE_DEC, VALS(x509ce_GeneralName_vals), 0, + "GeneralName", HFILL }}, + { &hf_idmp_calledAETitle, + { "calledAETitle", "idmp.calledAETitle", + FT_UINT32, BASE_DEC, VALS(x509ce_GeneralName_vals), 0, + "GeneralName", HFILL }}, + { &hf_idmp_bind_argument, + { "argument", "idmp.argument_element", + FT_NONE, BASE_NONE, NULL, 0, + "Bind_argument", HFILL }}, + { &hf_idmp_respondingAETitle, + { "respondingAETitle", "idmp.respondingAETitle", + FT_UINT32, BASE_DEC, VALS(x509ce_GeneralName_vals), 0, + "GeneralName", HFILL }}, + { &hf_idmp_bind_result, + { "result", "idmp.result_element", + FT_NONE, BASE_NONE, NULL, 0, + "Bind_result", HFILL }}, + { &hf_idmp_bind_errcode, + { "errcode", "idmp.errcode_element", + FT_NONE, BASE_NONE, NULL, 0, + "Bind_errcode", HFILL }}, + { &hf_idmp_aETitleError, + { "aETitleError", "idmp.aETitleError", + FT_UINT32, BASE_DEC, VALS(idmp_T_aETitleError_vals), 0, + NULL, HFILL }}, + { &hf_idmp_bind_error, + { "error", "idmp.error_element", + FT_NONE, BASE_NONE, NULL, 0, + "Bind_error", HFILL }}, + { &hf_idmp_invokeID, + { "invokeID", "idmp.invokeID", + FT_INT32, BASE_DEC, NULL, 0, + "INTEGER", HFILL }}, + { &hf_idmp_opcode, + { "opcode", "idmp.opcode", + FT_UINT32, BASE_DEC, VALS(idmp_Code_vals), 0, + "Code", HFILL }}, + { &hf_idmp_argument, + { "argument", "idmp.argument_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_idm_invokeID, + { "invokeID", "idmp.idmResult.invokeID", + FT_UINT32, BASE_DEC, VALS(idmp_InvokeId_vals), 0, + NULL, HFILL }}, + { &hf_idmp_result, + { "result", "idmp.result_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_errcode, + { "errcode", "idmp.errcode_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_error, + { "error", "idmp.error_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_reason, + { "reason", "idmp.reason", + FT_UINT32, BASE_DEC, VALS(idmp_T_reason_vals), 0, + NULL, HFILL }}, + { &hf_idmp_local, + { "local", "idmp.local", + FT_INT32, BASE_DEC, NULL, 0, + NULL, HFILL }}, + { &hf_idmp_global, + { "global", "idmp.global", + FT_OID, BASE_NONE, NULL, 0, + "OBJECT_IDENTIFIER", HFILL }}, + { &hf_idmp_present, + { "present", "idmp.present", + FT_INT32, BASE_DEC, NULL, 0, + "INTEGER", HFILL }}, + { &hf_idmp_absent, + { "absent", "idmp.absent_element", + FT_NONE, BASE_NONE, NULL, 0, + NULL, HFILL }}, + }; + + /* List of subtrees */ + static gint *ett[] = { + &ett_idmp, + &ett_idmp_fragment, + &ett_idmp_fragments, + &ett_idmp_IDM_PDU, + &ett_idmp_IdmBind, + &ett_idmp_IdmBindResult, + &ett_idmp_IdmBindError, + &ett_idmp_Request, + &ett_idmp_IdmResult, + &ett_idmp_Error, + &ett_idmp_IdmReject, + &ett_idmp_Code, + &ett_idmp_InvokeId, + }; + module_t *idmp_module; + + /* Register protocol */ + proto_idmp = proto_register_protocol(PNAME, PSNAME, PFNAME); + + /* Register fields and subtrees */ + proto_register_field_array(proto_idmp, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + idmp_handle = register_dissector("idmp", dissect_idmp_tcp, proto_idmp); + + register_cleanup_routine (&idmp_reassemble_cleanup); + reassembly_table_register (&idmp_reassembly_table, + &addresses_reassembly_table_functions); + + + /* Register our configuration options for IDMP, particularly our port */ + + idmp_module = prefs_register_protocol_subtree("OSI/X.500", proto_idmp, NULL); + + prefs_register_bool_preference(idmp_module, "desegment_idmp_messages", + "Reassemble IDMP messages spanning multiple TCP segments", + "Whether the IDMP dissector should reassemble messages spanning multiple TCP segments." + " To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.", + &idmp_desegment); + + prefs_register_bool_preference(idmp_module, "reassemble", + "Reassemble segmented IDMP datagrams", + "Whether segmented IDMP datagrams should be reassembled." + " To use this option, you must also enable" + " \"Allow subdissectors to reassemble TCP streams\"" + " in the TCP protocol settings.", &idmp_reassemble); +} + + +/*--- proto_reg_handoff_idm --- */ +void proto_reg_handoff_idm(void) { + dissector_add_uint_with_preference("tcp.port", IDMP_TCP_PORT, idmp_handle); +} |